He needs to love himself otherwise loving someone else is a form of escapism. People are conditioned to believe through media that you find the love of your life and everything’s fixed. This is manipulation to keep you trapped in a loop.
So once the honeymoon phase wears off, and it always does, your problems that were there in the beginning always resurface. Now you have someone else to blame them on, and most people would rather do this instead of facing themselves. So you delete and start over.